Tachometer Gain Express Dual Mode Handheld TAC-401

Description

Product Overview

The Gain Express Dual Mode Tachometer (model TAC-401) combines contact and non‑contact measurement in a compact handheld device. Built with a durable ABS housing, it measures rotational speed from 50 mm to 500 mm away, supporting both meters per second and RPM units. Powered by two AAA batteries, the unit weighs just 7.05 oz and measures 7.87 × 2.91 × 1.46 in, making it easy to carry on any job site. A built‑in backlight ensures readability in low‑light environments, while a low‑battery indicator alerts you before power runs out.

Usage

Designed for industrial technicians, maintenance engineers, and hobbyists, this tachometer excels in factories, workshops, and field service scenarios. Use the contact probe to attach directly to shafts, gears, or pulleys for precise RPM readings, or switch to non‑contact mode to measure from a safe distance—perfect for high‑speed or hazardous equipment. The device’s auto power‑off after 15 minutes conserves battery life, and the feature can be disabled for continuous monitoring during extended tests.

Why Choose Us

Gain Express is known for rigorous quality control and reliable instrumentation. Each tachometer undergoes calibration verification before shipping, ensuring accuracy within ±1 % of reading. The detachable probe is replaceable, extending the product’s lifespan and reducing long‑term costs. With a 4.2‑star rating from 27 verified customers, the TAC‑401 has proven its durability and performance in real‑world applications.

Key Features

• Dual measurement modes: contact probe and non‑contact laser for flexible use.
• Backlit LCD display with low‑battery indicator for clear visibility.
• Extended range of 50‑500 mm and easy unit switching between RPM, m/s, and Hz.
• Data HOLD and max/min tracking for comprehensive measurement analysis.
• Auto power‑off after 15 minutes, with optional disable for continuous operation.

FAQ

What type of batteries does the tachometer use?

The device requires two standard AAA batteries, which are easy to replace and provide up to 200 hours of intermittent use.

Can I use the tachometer on high‑speed equipment?

Yes, the non‑contact mode can safely measure speeds up to 30,000 RPM from a distance of up to 500 mm, making it suitable for high‑speed motors and turbines.

Is the probe replaceable?

Absolutely. The contact probe is detachable and can be swapped with spare or specialized probes for different shaft sizes.

How accurate is the measurement?

Gain Express guarantees an accuracy of ±1 % of the displayed value when used according to the manual.

Does the device store measurement data?

While it does not have built‑in memory, the Data HOLD function lets you freeze the current reading for manual recording.